The average of 7 consecutive numbers is 20. The largest of these numbers is:

If x:y = 1/2 : 1/3 and y:z = 1/4 : 1/5, find x:y:z.

A car travels at 60 km/h for the first 2 hours and 40 km/h for the next 3 hours. What is the average speed of the car?

A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/h, what is the length of the platform?

The sum of two numbers is 40 and their difference is 4. What is the ratio of the two numbers?

A cistern has two taps which fill it in 12 and 15 minutes respectively. There is also a waste pipe. When all three are opened, the cistern is filled in 20 minutes. How long will the waste pipe take to empty it?

A shopkeeper offers two successive discounts of 20% and 10%. What is the equivalent single discount?

A sum of ₹2,500 becomes ₹2,975 in 3 years at simple interest. What is the rate of interest?

If a certain sum amounts to ₹12,100 in 2 years at 10% compound interest compounded annually, what is the principal sum?

Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, how much time will they take to fill the tank?

If 6 men and 8 boys can do a piece of work in 10 days, while 26 men and 48 boys can do the same in 2 days, what is the time taken by 15 men and 20 boys?

If x:y = 3:4 and y:z = 8:9, what is x:z?

The price of sugar rises by 25%. By how much percent should a household reduce consumption to keep the expenditure same?

Average of five numbers is 20. If each number is multiplied by 2, what will be the new average?

A train 150m long is running at a speed of 60 km/h. How much time will it take to cross a platform 250m long?

The difference between Simple Interest and Compound Interest on ₹1000 for 2 years at 10% per annum is?

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is:

A man can do a piece of work in 5 days, but with the help of his son, he can do it in 3 days. In what time can the son do it alone?

A container contains 40 litres of milk. From this container, 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?

A sum of money doubles itself in 8 years at simple interest. In how many years will it become four times itself at the same rate?